Q.ty	Part No.#	Package	Flash	EEPROM	RAM	Speed	Pins	I/O
1	18F442	PDIP	16KB	256 B	768 B	40MHz	40	32
1	18LF442	PDIP	16KB	256 B	768 B	40MHz	40	32
2	18F4550	PDIP	32KB	256 B	2048 B	48MHz	40	32
2	18F4580	PDIP	32KB	256 B	1536 B	40MHz	40	32
